змейка

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication25
{
    class Program
    {
        class snake
        {
            public List<Point> points;
            public int lenght;
            Point head;
            public void move(Point point)
            {
                points.Insert(0, point);
                points.RemoveAt(points.Count - 1);
                Point haed;
            }
            public void Rost(Point point)
            {
                points.Insert(0, point);
                Point haed;
            }

            public snake(Point point)
            {
                points.Add(point);
            }
        }

        class Point
        {
            public int x;
            public int y;


            public Point()
            {
                x = 11;
                y = 11;
            }

            public Point(int x, int y)
            {
                this.x = x;
                this.y = y;
            }

            public static bool operator == (Point p1,Point p2)
            {
                return (p1.x == p2.x) && (p1.y == p2.y);
            }
            public static bool operator !=(Point p1, Point p2)
            {
                return (p1.x != p2.x) || (p1.y != p2.y);
            }

        }

        static void pole(int size)
        {

            for (int i = 0; i < size + 2; i++)
            {
                Console.SetCursorPosition(2 * i, 0); //вг
                Console.Write("#");
                Console.SetCursorPosition((size + 1) * 2, i);//пв
                Console.Write("#");
                Console.SetCursorPosition(2 * i, size + 1);//нг
                Console.Write("#");
                Console.SetCursorPosition(0, i);//лв
                Console.Write("#");
            }

        }


        static bool CharacterControl(ref Point point, int size, ref bool isEat, Point apple)
        {
            ConsoleKeyInfo button;
            button = Console.ReadKey(true);

            if (button.Key == ConsoleKey.Escape)
            {
                return true;
            }



            Console.SetCursorPosition(point.x, point.y);
            Console.Write(" ");

            switch (button.Key)
            {
                case ConsoleKey.W:
                    point.y = (point.y - 1 == 0) ? size : point.y - 1;
                    break;

                case ConsoleKey.A:
                    point.x = (point.x - 2 < 0) ? size * 2 + 1 : point.x - 2;
                    break;


                case ConsoleKey.S:
                    point.y = (point.y + 1 == size + 1) ? 1 : point.y + 1;
                    break;
                case ConsoleKey.D:
                    point.x = (point.x + 2 > size * 2 + 1) ? 1 : point.x + 2;
                    break;

            }

            if (point == apple)
            {
                isEat = true;
            }

            Console.SetCursorPosition(point.x, point.y);
            Console.Write("0");

            return false;

        }



        static void Main(string[] args)
        {
            Console.CursorVisible = false;
            snake snake = new snake(new Point());
            Point apple= new Point();
            Random r = new Random();
            Point point = new Point();
            Console.SetCursorPosition(point.x, point.y);
            Console.Write("0");
            int size = 20;
            bool isEat = true;
            pole(size);


            bool exit;


            do
            {
                exit = CharacterControl( ref point, size , ref isEat, apple);
                if (isEat)
                {


                    do
                    {
                        apple.x = r.Next(0, size + 1) * 2 + 1;
                        apple.y = r.Next(1, size + 1);

                    } while (point == apple);
                    Console.SetCursorPosition(apple.x, apple.y);
                    Console.Write("@");
                    isEat = false;
                }


            } while (!exit);







        }
    }

}